Sensors for catheter pumps

A non-transitory computer-readable medium comprising instructions stored thereon that, when executed by a processor, perform a method comprising:

• receiving a proximal signal from a proximal sensor disposed near a proximal port of a cannula;
• processing the proximal signal to determine a proximal fluid signature related to a first property of fluid flowing through the proximal port;
• comparing the proximal fluid signature with a proximal baseline signature, the proximal baseline signature associated with a proper position of the cannula during a treatment procedure;
• and
• determining a position of the cannula relative to the proper position of the cannula based on the comparison of the proximal fluid signature with the proximal baseline signature.

A processing system for a catheter system having a cannula coupled to a distal portion thereof and configured to be placed in a vasculature of a patient, comprising:

• a proximal sensor disposed near a proximal port of the cannula and configured to detect a first property of a fluid flowing through the proximal port and transmit a proximal signal indicative of the first property;
• and
• a computing device communicatively coupled to the proximal sensor comprising a processor and a memory, the memory comprising instructions that, when executed by the processor cause the computing device to:
• receive the proximal signal from the proximal sensor;
• process the proximal signal to determine a proximal fluid signature related to the first property of the fluid;
• compare the proximal fluid signature with a proximal baseline signature, the proximal baseline signature associated with a proper position of the cannula during a treatment procedure;
• and
• determine a position of the cannula relative to the proper position of the cannula based on the comparison of the proximal fluid signature with the proximal baseline signature.